xAI has launched two new iterations of its Grok chatbot, Grok-2 and Grok-2 Mini, with upgraded performance and new capabilities. The flagship model, Grok-2, has demonstrated competitive results in recent benchmarks and outperforms other frontier models. The smaller variant, Grok-2 Mini, aims to balance speed and answer quality. Both models are now available on the X social platform, with an enterprise API release planned for later this month. However, the new image-generation capability raises questions about content authenticity on social media.